C++ Builder中，sql server在客户端调用存储过程向服务器端备份数据库

C++ Builder中，sql server在客户端调用存储过程向服务器端备份数据库

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-- 技术教程 (http://www.webasp.net/article/)
--- C++ Builder中，sql server在客户端调用存储过程向服务器端备份数据库 (http://www.webasp.net/article/19/18622.htm)

-- 作者：未知
-- 发布日期： 2005-04-29

1.Create a backup database stored procedure in master database.

CREATE PROCEDURE backupdb
@database varchar(10),
@directory varchar(100)
AS
backup database @database
to disk=@directory

2.Get path of SQL Server.

AnsiString __fastcall TFrmDM::GetSqlServerPath(){
AnsiString result,tmp;
TADOQuery *Query=new TADOQuery(this);
Query->Connection=ADOConnection_Master;
Query->Close();
Query->SQL->Clear();
Query->SQL->Add("select filename from sysdatabases where name='master'");
Query->Open();
tmp=Query->FieldByName("filename")->AsString;
result=tmp.SubString(1,tmp.Length()-15);
Query->Free();
return result;
}

3.Call the backup database stored procedure.

d=FormatDateTime("yyyy-mm-dd hh-mm-ss",FrmDM->GetServerTime());
try{
     path=FrmDM->GetSqlServerPath()+"backup\\";
     FrmDM->ADOStoredProc1->Close();
     FrmDM->ADOStoredProc1->Connection=FrmDM->ADOConnection_Master;
     FrmDM->ADOStoredProc1->Prepared=true;
     FrmDM->ADOStoredProc1->ProcedureName="backupdb;1";
     FrmDM->ADOStoredProc1->Parameters->ParamByName("@database")->Value = "db_name_to_backup";
     FrmDM->ADOStoredProc1->Parameters->ParamByName("@directory")->Value =path+"db_name_to_backup"+d;
     FrmDM->ADOStoredProc1->ExecProc();
     Application->MessageBox("备份完成","提示",MB_OK+MB_ICONINFORMATION);
     this->Close();
   }
   catch(...){
     Application->MessageBox("备份出错，请重新再来","警告",MB_OK+MB_ICONWARNING);
     return;
   }

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